Ok I figured this out. This is apparently a VFX object I'm trying to attach to the player that for the life of me I can't. I have no idea why a stopped VFX object shows this sunburst, though. And the weird thing is, once I deleted this object (which was in a different location than this at start), the objects that worked in the editor but wouldn't display on mobile began to show up, however the triggers on them no longer trigger when the player hits them. Uh...wewird.
In order to attach a VFX to a player you have to group it with an object and then attach the group to the player. Make sure that the properties of the group have the Avatar Attachable toggle turned on, under the More category. If you don't see this option, confirm that the group is collidable and animated first.
